550965251 has 4 divisors (see below), whose sum is σ = 551012472. Its totient is φ = 550918032.

The previous prime is 550965227. The next prime is 550965271. The reversal of 550965251 is 152569055.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 152569055 = 5 ⋅30513811.

It is a cyclic number.

It is not a de Polignac number, because 550965251 - 2²² = 546770947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550965271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7991 + ... + 34143.

It is an arithmetic number, because the mean of its divisors is an integer number (137753118).

Almost surely, 2^550965251 is an apocalyptic number.

550965251 is a deficient number, since it is larger than the sum of its proper divisors (47221).

550965251 is a wasteful number, since it uses less digits than its factorization.

550965251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47220.

The product of its (nonzero) digits is 67500, while the sum is 38.

The square root of 550965251 is about 23472.6489983555. The cubic root of 550965251 is about 819.8002939208.

The spelling of 550965251 in words is "five hundred fifty million, nine hundred sixty-five thousand, two hundred fifty-one".